Since the residual values and useful lives of plant: assets are only estimates, it is not uncommon for plant assets to be sold at prices which differ from their book value at the date of disposal.

由于固定资产的残值和使用年限均只是估计，处置固定资产时的出售价格不同于其账面净值是很常见的。

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When asked to estimate the energy released by this book if it were burned, however, many do have trouble, and the estimates can vary by orders of magnitude.

你估计，这本书所释放的能量，如果被烧毁，但确实有很多麻烦，估计各不相同的数量级。

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Privately held fortunes were valued at book value or by coupling estimates of revenues, profits or book value to prevailing ratios for similarly publicly traded companies.

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Everything looked pretty rosy in terms of earnings estimates, book-to-bill ratios, etc.

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But these costs typically represent only a tenth of a printed book's retail price, estimates Credit Suisse, an investment bank.

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